Starting means for explosion-motors.



PATENTED APR. 2, 1907.

E. A. NELSON.

STARTING MEANS FOR EXPLOSION MOTORS.

APPLIGATION FILED JAN.24, 1906.

HBET 1.

Ej'wuamtoz & km

Witwwwo aftozmu p PATBNTED APR. 2, 190'? E. A. NELSON.

STAR-TING MEANS FOR- EXPLOSION MOTORS.

APPLIOATION FILED JAN. 2-1, 1906.

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EMIL A. NELSON, OF DETROIT; MICHIGAN, ASSIGNOR To WILLIAM J.

AND CHARLES J- WOODALL,

OF DETRGIT, MICHZG. N.

' sTAR'rING means; Fo'a sxF Losion-moroae.

Specification of Letters Patent.

Application filed January 24,1906. Serial No. 297,625.

To all whom; it may concern.-

Be it known that I, EMIL A. NELSON, a citizen of the United States,residing at Detroit, in the county of Wayne and State of Michigan,

useful Improvements in Starting Means for Explosion-Motors, of which.the following is a specification. I

My invention relates to explosive-motors and to the startingappliances'therefor, and

' consists in means whereby 'the startingshaft can be rotated from a.crank without the latter being. turned by'the rotation in eitherdirection-of said shaft, as fully set forth hereinafter and asillustrated in the accom panying drawings, in which Figure 1 is anelevation in part section of my improved starting device; Fig. 2, aplan;

Figs. 3 and 4, elevations showing mod1ficati'ons, Fig. 5, a plan of Fig.4.

Y The engine B, of any suitable character, is provided with a shaft E,geared in any way to be driven by the engine or the rotation of whichwill serve tostart the engine, and u on this shaft is'a worm-wheel 70,to whici is adapted a worm 71 which may be turned by a handle 74 torotate the worm-wheel and which may also be moved horizontally into andout of engagement with the woi'nmvlieel.

As shown in,Figs. 1 and 2', the worm 71'is connected to a shaft 72tangential to the worm-wheel 7 O and sliding in a bearing 73 of theframe and provided at the outer end with the handle. These parts are soarranged and pro ortioned that by sliding the handle-shaft 72 t 10 wormmay be brought to either of the positions shown at 1., 2, and 3 in thedrawings. A spring 75 issu-itabl arranged and connected to tend to carryt e worm to the position No. 1, but will yieldto allow it' to move toeither of the other positions, exerting sufficient stress when theworm-wheel is in its central position to maintain it in gear with theworm wheel during the rotation of the shafts in starting. When'the shaftE be I ginstorotate at'a greater speed than is imparted from the shaft72, as the engine starts in action the worm can be thrown back to theposition No. 1. The spring, however, iscapable of being furthercompressed, so that if when turning the worm-wheel by the action of theshaft 72 there is a hack action of the worm-wheel this movement of thelatter will carry'the worm to the position 3.

have invented certain new and nected to the worm and to a col above thedead-center.

:igine upon it will of course be evident thatthe spring 75 may beconnected to secure the desired action in any suitable manner; but, asshown, the shaft 72 is hollow ano'can slide inward w; a rod 76, fixed toa bracket 77, the 7.5 within the hollow shaft bearing agaii t the end ofthe said rod and against the outer end the shaft.

In the construction shown in. 3

crank-shaft slides, the worm. n'

'with and sliding on the shaft 8131M tained in its position No. 2 which18 of such strength turning the worm-wheel a1.

osition No. 2 to start the engine b pnshing in the shaft but when themotor starts in ac 8o tion the shaft and wormwill he carried to positionN o. 1 and retained by sprin 91. The spring will yield in case of backring the worm-wheel is reversed. (in the eonstruction shown in Figs. 4.and. 5 also the crank 85. shaft turns and the worm and slides thereon.In this case 8. pair oi springs 9393 act to straighten toggles 96 96,cen-' ar 9% on the shaft, and hold them with the ints a little The shaftis pushed in to bring the worm to the position No. for turnin the shaftE by hand. t t 11633 the shaft, 1% begins to rotate by the action of theengine, the worm, with its t, carried 5 to the left, a spring tending tomaintain them in this position. In. case of back firing, the toggleswill be bent'against the stress of the springs, the worm being carriedto the position No.3. 'Ioo WVith out limiting myself to the precise construction and arrangement shown,

I claim' l 1. The combination with the shaft. of a motor,of-a-worm-wheel, worm, and sctuatx05 ingehandle for starting the sh: .t,the worm movable tangentially in respect to the wheel to be throwntangentially out of engagement said hand-s therewith on the rotation ofthe wheel faster than or in a different direction from the worm.

2. The combination with the shaft of a motor, of a worm-wheel thereon, astartingshaft provided with a handle and carrying a worm, and a springsupport for the worm constructed to yield to permit the worm to becarried on the shaft by the wheel,

3. The combination with a shaft of a mot 1', of a worm-wheel, a worm,and means for turning the same to rotate the wheel,i,the worm mounted toslide to different positions out of engagement with the whe l under theaction of the latter Y r 4. The combination with th Shaft Of a motor, ofa worm-wheel, a handrshaft, a worm enga ing said Wheel and turning withf m ans wher by the wo m may be carried tangentially to, beneath, and beend said wheel and-a spri g tending to hr!)1 d lthe worm on ofengagement with the w ee 5. The eombinntion with the shaft ora motor,.of a worm-wheel, a hand-shaft, a worm. engafiging said wheel andcarried by said hand-s1aft, means whereby the worm maybe carriedtangentially to, beneath and beyond said wheel, and means whereby'theworm is permitted to slide tangentially in respect to the wheel when thewheel; turns faster than or in a different directiohirom the shaft.

6. The combination with the shaft of a 5 motor, of a worm-wheel thereon,a startinga shaft provided with a handle and carrying a worm, and aspring connected to be compressed as the worm is carried to a positionengaging the wheel and capable of yielding to permit the worm to becarried by the wheel.

7 The combination with the shaft of a motor carrying a worm-wheel, ofahollow starting-shaft earr ing a 'worm and handle and mounted to s idelongitudinally, and a spring arranged to carry the hand-shaft to apllmltilfill withthe worm at one side of the \V ICC In testimony.whereof I allix my signature in presence of two witnesses. N EMIL A.NELSON" \llit'nesses: Y

'Bnuo'r. G. Guernsey, Enmuu U. Mxmumnn;

